Many questions that ask explicitly for software, hardware, data, and other recommendations are closed at GIS Stack Exchange as being primarily opinion-based and/or for lacking focus.
Many Stack Exchange sites, including some that are MUCH smaller than GIS SE (measured by number of questions posted), are very explicit in their Help that such questions are not for them.
- Ask Ubuntu
- Electrical Engineering
- Network Engineering
- Project Management
- Server Fault
- Software Engineering
- Stack Overflow
- Super User
And an example of the text they use is:
Some questions are still off-topic, even if they fit into one of the categories listed above:
4.Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
Do you think that GIS Stack Exchange should borrow content from one or more of these sites and put it into the equivalent part of our Help?